2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Regular Cab Long Box in Onyx Black: Pickup truck front grille and side view with Regular Cab and Long Box configuration

Pickup truck front grille and side view with Regular Cab and Long Box configuration

Front and side view of a full-size pickup truck showcasing a prominent chrome front grille, dual headlamps, and extended regular cab with four doors and a long cargo bed.

View Dimensions of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Regular Cab Long Box

View 19 images of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Regular Cab Long Box

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